IRN-BRU maker AG Barr has reported flat first half profits after "the worst summer in 100-years" in its home market.

Pre-tax profits for the six months to July 31 were s16.2 million against s16 million for the same period last year.

This was despite a four per cent rise in overall sales to s124 million against s119.2 million at the same point a year ago.

But this year's sales increases compare with a 14 percent rise in 2010, when second-half revenue rose 6.7 percent.

However there were some signs of improvement in the second quarter of this year, with sales up 5.1 per cent on the previous quarter.

Sales of key brands Irn-Bru and the Rubicon and KA fruit juice ranges rose by six per cent overall the Cambuslang-based company said.

Irn-Bru sales in Scotland remained flat and overall declined 1.2 per cent on a year ago.

Chief Executive Roger White said he was happy with Scottish Irn-Bru sales "after the worst summer for 100 years... given the market context and the weather in that geography".

He added: "We are pleased to have delivered financial performance in line with our expectations.

"This is a particularly positive result given the challenging comparatives we faced in the first half of the year, the relatively poor summer weather, which has impacted the soft drinks market and a competitive market backdrop.

"Whilst we remain cautious regarding the second half, given the market context, we are confident that we have a strong programme of activity including further innovation, which should help maintain our growth momentum.

"The combination of less demanding comparatives, better cost visibility, a strong programme of brand activity and good sales momentum gives us confidence that, assuming no significant adverse changes in the marketplace, we will meet our expectations for the full year."

Barr said it was pleased with the overall results, which it had achieved amid rising raw material costs and increased promotional activity.

The company, which also owns the Tizer and Strathmore Water brands, said it plans to invest in a production site in the south of England to boost sales outside Scotland and northern England.

A decision on the location is expected by the end of year.

Despite Barr taking a cautious view of the coming six months, the board has approved an 8.1 per cent rise in the interim dividend to 730 pence.

Looking ahead, White said: "Whilst we remain cautious regarding the second half, given the market context, we are confident that we have a strong programme of activity including further innovation, which should help maintain our growth momentum."